<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>test3</title>
</head>
<body>

<?php include __DIR__ . DIRECTORY_SEPARATOR . 'head.php';?>

<div>test3</div>
<div><?php var_dump($a, $b);?></div>

<?php include __DIR__ . DIRECTORY_SEPARATOR . 'foot.php';?>

<script type="text/javascript" src="/resource/js/jquery-3.3.1.min.js"></script>
<script type="text/javascript">

</script>
</body>
</html>